{-|

hledger-web - a hledger add-on providing a web interface.
Copyright (c) 2007-2012 Simon Michael <simon@joyful.com>
Released under GPL version 3 or later.

-}

module Hledger.Web.Main
where

-- yesod scaffold imports
import Prelude              (IO)
import Yesod.Default.Config --(fromArgs)
-- import Yesod.Default.Main   (defaultMain)
import Settings            --  (parseExtra)
import Application          (makeApplication)
import Data.Conduit.Network (HostPreference(HostIPv4))
import Network.Wai.Handler.Warp (runSettings, defaultSettings, settingsPort)
import Network.Wai.Handler.Launch (run, runUrl, runUrlPort)
--
import Prelude hiding (putStrLn)
import Control.Monad (when)
import Data.Text (pack)
import System.Exit (exitSuccess)
import Text.Printf

import Hledger
import Hledger.Utils.UTF8IOCompat (putStrLn)
import Hledger.Cli hiding (progname,prognameandversion)
import Hledger.Web.Options


main :: IO ()
main = do
  opts <- getHledgerWebOpts
  when (debug_ $ cliopts_ opts) $ printf "%s\n" prognameandversion >> printf "opts: %s\n" (show opts)
  runWith opts

runWith :: WebOpts -> IO ()
runWith opts
  | "help" `in_` (rawopts_ $ cliopts_ opts)            = putStr (showModeHelp webmode) >> exitSuccess
  | "version" `in_` (rawopts_ $ cliopts_ opts)         = putStrLn prognameandversion >> exitSuccess
  | "binary-filename" `in_` (rawopts_ $ cliopts_ opts) = putStrLn (binaryfilename progname)
  | otherwise = do
    requireJournalFileExists =<< journalFilePathFromOpts (cliopts_ opts)
    withJournalDo' opts web

withJournalDo' :: WebOpts -> (WebOpts -> Journal -> IO ()) -> IO ()
withJournalDo' opts cmd = do
  journalFilePathFromOpts (cliopts_ opts) >>= readJournalFile Nothing Nothing >>=
    either error' (cmd opts . journalApplyAliases (aliasesFromOpts $ cliopts_ opts))

-- | The web command.
web :: WebOpts -> Journal -> IO ()
web opts j = do
  -- unless (debug_ $ cliopts_ opts) $ forkIO (browser baseurl) >> return ()
  d <- getCurrentDay
  let j' = filterJournalTransactions (queryFromOpts d $ reportopts_ $ cliopts_ opts) j
  server (base_url_ opts) (port_ opts) opts j'

-- browser :: String -> IO ()
-- browser baseurl = do
--   threadDelay $ fromIntegral browserstartdelay
--   putStrLn "Attempting to start a web browser"
--   openBrowserOn baseurl >> return ()

server :: String -> Int -> WebOpts -> Journal -> IO ()
server baseurl port opts j = do
    _ <- printf "Starting http server on port %d with base url %s\n" port baseurl
    app <- makeApplication j (AppConfig {
              appEnv = Development
            , appPort = port_ opts
            , appRoot = pack baseurl
            , appHost = HostIPv4
            , appExtra = Extra "" Nothing
            })
    -- runSettings defaultSettings
    --     { settingsPort = port_ opts
    --     } app
    run app